#tuple内容确定后不可变
t =('aaa','bbb','ccc')
print(t)
#只有一个元素这样定义，用逗号
tt = (1,)
print(tt)
#tuple中套list和tuple
t3 = ('111','222',['33','44'],'55')
print(t3)
print(t3[2][1])
t4=('111','222',('363','464'),'55')
print(t4)
print(t4[2][1])